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425 Commits

Author SHA1 Message Date
Thomas Schatzl
035d0190a3 8202017: Merge Reference Enqueuing phase with phase 3 of Reference processing 
Do reference enqueuing work directly in phase 3 after every Reference.

Reviewed-by: kbarrett, sangheki
 2018-05-08 10:01:29 +02:00
Stefan Karlsson
1cb95bd3d1 8200729: Conditional compilation of GCs 
Reviewed-by: ehelin, coleenp, kvn, ihse
 2018-05-04 11:41:35 +02:00
Coleen Phillimore
204ba9a580 8202447: Fix unloading_occurred to mean unloading_occurred 
Nmethod unloading does not need to test for jvmti to set unloading_occurred, nor do we need to clean weak Klasses in metadata if unloading does not occur.

Reviewed-by: sspitsyn, rehn
 2018-04-27 15:00:04 -04:00
Thomas Schatzl
deb5bf745f 8202021: Improve variable naming in ReferenceProcesso 
Reviewed-by: sangheki, sjohanss
 2018-05-03 14:10:08 +02:00
Thomas Schatzl
73771f97e9 8202018: Move card table clear before enqueuing pending references 
Move card table clearing in preparation of removal of the Reference enqueue phase.

Reviewed-by: sangheki, sjohanss
 2018-05-03 14:09:39 +02:00
Thomas Schatzl
91ba4b5676 8201640: Use _ref_processor_* member variables directly in G1CollectedHeap 
Reviewed-by: sjohanss
 2018-05-03 14:09:21 +02:00
Thomas Schatzl
945701e945 8201492: Properly implement non-contiguous generations for Reference discovery 
Collectors like G1 implementing non-contiguous generations previously used an inexact but conservative area for discovery. Concurrent and STW reference processing could discover the same reference multiple times, potentially missing referents during evacuation. So these collectors had to take extra measures while concurrent marking/reference discovery has been running. This change makes discovery exact for G1 (and any collector using non-contiguous generations) so that concurrent discovery and STW discovery discover on strictly disjoint memory areas. This means that the mentioned situation can not occur any more, and extra work is not required any more too.

Reviewed-by: kbarrett, sjohanss
 2018-05-03 14:09:00 +02:00
Stefan Johansson
7f7d103c85 8191471: Elastic TLABs for G1 
Reviewed-by: tschatzl, pliden
 2018-05-02 13:44:46 +02:00
Thomas Schatzl
0f583c7817 6672778: G1 should trim task queues more aggressively during evacuation pauses 
Regularly try to drain task queues. This helps memory usage and performance during garbage collection.

Reviewed-by: sjohanss, sangheki
 2018-04-27 12:06:46 +02:00
Erik Österlund
f4893f5a9a 8201543: Modularize C1 GC barriers 
Reviewed-by: pliden, rbackman, rkennke
 2018-04-26 20:42:43 +02:00
Gerard Ziemski
edc81d17e1 8202150: [REDO] Split globals.hpp to factor out the Flag class 
Factored out Flag out go globals, renamed to JVMFlag

Reviewed-by: coleenp, dholmes, kvn
 2018-04-26 11:19:05 -05:00
Coleen Phillimore
8a427a07d8 8202164: Remove some unneeded BoolObjectClosure* is_alive parameters 
Reviewed-by: kbarrett, stefank
 2018-04-25 17:50:32 -04:00
Kim Barrett
a99eca12cc 8201826: G1: Don't invoke WeakProcessor if mark stack has overflowed 
Move WeakProcessor invocation after overflow check

Reviewed-by: stefank, tschatzl
 2018-04-23 16:00:56 -04:00
Gerard Ziemski
816e2e5fe0 8202151: [BACKOUT] Split globals.hpp to factor out the Flag class 
Backed out JDK-8081519

Reviewed-by: kvn
 2018-04-23 14:51:16 -05:00
Gerard Ziemski
60723b7e3d 8081519: Split globals.hpp to factor out the Flag class 
Factored out Flag out go globals, renamed to JVMFlag

Reviewed-by: coleenp, dholmes, kvn
 2018-04-23 10:59:39 -05:00
Per Lidén
a4f21eeb03 8201646: Introduce ReferenceDiscoverer interface 
Reviewed-by: stefank, tschatzl, rkennke
 2018-04-19 07:54:50 +02:00
Stefan Johansson
ffd8b1f9bd 8196071: Change G1 Full GC heap and thread sizing ergonomics 
Reviewed-by: tschatzl, sangheki
 2018-04-19 09:15:17 +02:00
Coleen Phillimore
ddfd4c33c6 8201556: Disallow reading oops in ClassLoaderData if unloading 
Move class_loader oop to an OopHandle, and assert that holder is alive when getting class_loader.

Reviewed-by: kbarrett, adinn
 2018-04-18 18:43:04 -04:00
Coleen Phillimore
c215aa5889 8201537: Remove is_alive closure from Klass::is_loader_alive() 
Remove is_alive closure from callers of Klass::is_loader_alive so that cleaning metadata doesn't require GC closure.

Reviewed-by: adinn, stefank
 2018-04-18 13:37:39 -04:00
Thomas Schatzl
2006105114 8201527: Bump default value of G1RefProcDrainInterval 
Due to high startup cost of marking, lower the frequency of draining the mark stack generated by reference processing.

Reviewed-by: sangheki, sjohanss
 2018-04-18 19:00:32 +02:00
Coleen Phillimore
36d1d59425 8201505: Use WeakHandle for ProtectionDomainCacheTable and ResolvedMethodTable 
8193524: Redefining a method that removes use of 1 or more lambda expressions causes the JVM to hang

Remove oop pointers from runtime data structures.

Co-authored-by: Lois Foltan <lois.foltan@oracle.com>
Reviewed-by: lfoltan, stefank
 2018-04-18 12:06:53 -04:00
Thomas Schatzl
6db76f1af6 8201172: Parallelize Remset Tracking Update Before Rebuild phase 
Reviewed-by: sangheki, sjohanss
 2018-04-18 11:36:48 +02:00
Thomas Schatzl
ebbd7cf90b 8201596: java.lang.ref.Reference processing total time logging broken 
Fix "Reference Processing" and add "Weak Processing" time

Reviewed-by: kbarrett, sangheki
 2018-04-18 11:36:48 +02:00
Thomas Schatzl
c62a6abe91 8201490: Improve concurrent mark keep alive closure performance 
Avoid doing marking work unless absolutely required.

Reviewed-by: sjohanss, kbarrett
 2018-04-18 11:36:48 +02:00
Thomas Schatzl
dc7aa2ca03 8200730: Fix debug=gc+phases time tracking in Remark and Cleanup 
Timing in Remark and Cleanup pauses did not use instance variables for the scoped timing objects, so these durations were always zero.

Reviewed-by: sangheki, sjohanss
 2018-04-18 11:36:48 +02:00
Thomas Schatzl
5b42f3ce0d 8200426: Make G1 code use _g1h members 
Consistently use _g1h member names for cached G1CollectedHeap* variables.

Reviewed-by: sangheki, sjohanss
 2018-04-18 11:36:48 +02:00
Thomas Schatzl
e11d1b311d 8200723: Suppress rs_length and predicted_cards sampling during mixed gcs 
Due to the impact of these measurements on pause time, their high difference to other collections during mixed collections, and their non-use during mixed collections, do not use rs_length and predicted_cards measurements done during mixed gc for the predictor. This avoids the young gen sizing after the mixed phase to be negatively affected by mixed collections.

Reviewed-by: kbarrett, sjohanss
 2018-04-18 11:36:48 +02:00
Thomas Schatzl
9db71579ee 8154528: Reclaim regions emptied by marking in Remark pause 
Reviewed-by: shade, sjohanss
 2018-04-18 11:36:48 +02:00
Thomas Schatzl
7c09cf644b 8178105: Switch mark bitmaps during Remark 
Reviewed-by: sjohanss, sangheki
 2018-04-18 11:36:48 +02:00
Per Lidén
ec504ecf84 8201362: Remove CollectedHeap::barrier_set() 
Reviewed-by: shade, rkennke
 2018-04-12 11:22:24 +02:00
Per Lidén
6825739d3f 8201318: Introduce GCThreadLocalData to abstract GC-specific data belonging to a thread 
Reviewed-by: shade, rehn
 2018-04-12 08:25:56 +02:00
Per Lidén
4c60e69b97 8201316: Move G1-related static members from JavaThread to G1BarrierSet 
Reviewed-by: stefank, shade
 2018-04-12 08:25:30 +02:00
Thomas Schatzl
6e6a9ea8aa 8200233: Simple G1 evacuation path performance enhancements 
Implement some minor performance optimizations in the evacuation path including changing some stores to be OOP_NOT_NULL, specializing the compressed/uncompressed oops path and delay some load of the current heapregion until absolutely necessary.

Reviewed-by: kbarrett, sjohanss
 2018-04-11 11:41:30 +02:00
Thomas Schatzl
381dceed47 8201365: Remove G1Policy::should_process_references() 
Reviewed-by: shade
 2018-04-11 11:37:19 +02:00
Stefan Karlsson
f0f7a1b70d 8201168: Move GC command line constraint functions to GC specific files 
Reviewed-by: gziemski, sjohanss
 2018-04-10 12:17:16 +02:00
Stefan Karlsson
906806e067 8200759: Move GC entries in vmStructs.cpp to GC specific files 
Reviewed-by: sjohanss, shade
 2018-04-10 12:15:07 +02:00
Aleksey Shipilev
de2a00c110 8201359: Incorrect header guards after JDK-8198949 (Modularize arraycopy stub routine GC barriers) 
Reviewed-by: stefank, dholmes
 2018-04-10 12:12:43 +02:00
Thomas Schatzl
4fd82a111e 8200385: Eagerly reclaimed humongous objects leave mark in prev bitmap 
Also clear marks on prev bitmap on eager reclaim

Reviewed-by: sangheki, sjohanss
 2018-04-10 09:12:23 +02:00
Kim Barrett
a384a668a5 8200550: Xcode 9.3 produce warning -Wexpansion-to-defined 
Removed problem macros.

Reviewed-by: tschatzl, dholmes, coleenp
 2018-04-09 20:36:04 -04:00
Roman Kennke
389d720746 8199735: Mark word updates need to use Access API 
Reviewed-by: shade, eosterlund
 2018-04-05 10:54:53 +02:00
Leo Korinth
30079a437a 8201171: Cleanup in g1CollectedHeap, change CamelCase to snake_case 
Reviewed-by: sjohanss, tschatzl
 2018-04-05 14:25:53 +02:00
Stefan Karlsson
14a142ba14 8201136: Move GC flags from globals.hpp to GC specific files 
Reviewed-by: sjohanss, shade, rehn
 2018-04-06 13:55:25 +02:00
Stefan Johansson
b758cec4ad 8200169: Flatten G1Allocator class hierarchy 
Reviewed-by: tschatzl, sangheki
 2018-04-06 11:41:21 +02:00
Thomas Schatzl
e5ec636e7d 8200305: Update gc,liveness output with remset state after rebuild remset concurrently changes 
Reviewed-by: sjohanss, sangheki
 2018-04-04 14:51:26 +02:00
Thomas Schatzl
94d2a9db4c 8200074: Remove G1ConcurrentMark::_concurrent_marking_in_progress 
Reviewed-by: sjohanss, sangheki
 2018-04-04 11:21:14 +02:00
Thomas Schatzl
ee1bd0136b 8200255: Remove G1CMTask::_concurrent 
Reviewed-by: sangheki, sjohanss
 2018-04-04 11:21:14 +02:00
Thomas Schatzl
5780affe90 8200234: Cleanup Remark and Cleanup pause code 
Remove redundant methods, factor out verification code and simplify code in Remark and Cleanup pause code.

Reviewed-by: sangheki, sjohanss
 2018-04-04 11:21:14 +02:00
Leo Korinth
05dd65349b 8200371: In g1, rename ConcurrentMarkThread to G1ConcurrentMarkThread 
Reviewed-by: tschatzl, sangheki
 2018-04-03 12:05:49 +02:00
Thomas Schatzl
9189e982b4 8200362: G1Mux2Closure should disable implicit oop verification 
To avoid the implicit oop verification provided by OopClosure and oop_iterate_no_header, let G1 verification closures inherit from ExtendedOopClosures and disable this verification.

Reviewed-by: stefank, sjohanss
 2018-03-29 17:15:26 +02:00
Thomas Schatzl
d594ab7636 8151171: Bring g1ConcurrentMark files up to current coding conventions 
Improve method naming, bracketing, use of _g1h member and general cleanup.

Reviewed-by: sangheki, sjohanss
 2018-03-29 14:08:10 +02:00